Table 3: Area under the ROC curve, optimal cut-off points, and validity parameters of different obesity indices in predicting MetS ( ).

AUC (95% CI)Cut-off valueSensitivitySpecificityYouden index

Men
 Body mass index (BMI)0.56 (0.51–0.61)28 kg/m258.0%52.9%0.109
30 kg/m238.5%66.7%0.052
 Waist circumference (WC)0.78 (0.74–0.82)99.5 cm81.6%63.9%0.455
102 cm75.9%67.3%0.432
 Waist height ratio (WHtR)0.74 (0.71–0.79)0.5875.1%64.8%0.399
0.5096.6%24.5%0.211
 Waist hip ratio (WHR)0.75 (0.71–0.79)0.9070.1%69.9%0.400
Women
 Body mass index (BMI)0.70 (0.66–0.74)28.4 kg/m273.7%64.8%0.385
30 kg/m266.4%67.1%0.335
 Waist circumference (WC)0.81 (0.78–0.85)91.0 cm86.5%64.7%0.512
88 cm94.4%53.2%0.476
 Waist height ratio (WHtR)0.79 (0.76–0.83)0.6377.6%71.5%0.491
0.5096.1%20.1%0.162
 Waist hip ratio (WHR)0.75 (0.72–0.79)0.8875.4%71.5%0.469

AUC: area under the curve, ROC: receiver operating characteristics, CI: confidence interval.